TokenFactory和Tokenizer基础

src/Token/Factory/DefaultFactory.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * @filename DefaultFactory.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2020/12/17 14:48
+ */
+
+
+namespace JerryYan\DSL\Token\Factory;
+
+
+use JerryYan\DSL\Token\Token;
+use JerryYan\DSL\Token\TokenAnd;
+use JerryYan\DSL\Token\TokenOr;
+use JerryYan\DSL\Token\TokenVar;
+
+class DefaultFactory extends FactoryInterface
+{
+    protected $tokenMap = [
+        Token::AND => TokenAnd::class,
+        Token::OR => TokenOr::class,
+        Token::VAR => TokenVar::class,
+    ];
+
+    protected $tokenNameMap = [
+        "和" => Token::AND,
+        "或者" => Token::OR,
+        "或" => Token::OR,
+    ];
+
+    protected $undefinedTokenClass = TokenVar::class;
+}

src/Token/Factory/FactoryInterface.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * @filename FactoryInterface.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/22 13:42
+ */
+
+
+namespace JerryYan\DSL\Token\Factory;
+
+
+
+use JerryYan\DSL\Token\TokenInterface;
+use JerryYan\DSL\Token\TokenUndefined;
+
+abstract class FactoryInterface
+{
+    /** @var array<string, \JerryYan\DSL\Token\TokenInterface> Token类型及映射类 */
+    protected $tokenMap = [];
+    /** @var array<string, string> Token别名映射 */
+    protected $tokenNameMap = [];
+    /** @var \JerryYan\DSL\Token\TokenInterface 默认Token类 */
+    protected $undefinedTokenClass = TokenUndefined::class;
+
+    public function getTokenByName(string $name): TokenInterface
+    {
+        $originalName = $name;
+        if (isset($this->tokenNameMap[$name])) {
+            $name = $this->tokenNameMap[$name];
+        }
+        if (!isset($this->tokenMap[$name])) {
+            return new $this->undefinedTokenClass($originalName);
+        } else {
+            return new $this->tokenMap[$name]($originalName);
+        }
+    }
+
+}

src/Token/TokenFactory.php

@@ -1,37 +0,0 @@
-<?php
-/**
- * @filename TokenFactory.php
- * @author Jerry Yan <792602257@qq.com>
- * @date 2020/12/17 14:48
- */
-
-
-namespace JerryYan\DSL\Token;
-
-
-class TokenFactory
-{
-    /** @var array<string, string> Token类型及映射类 */
-    private $tokenMap = [
-        Token::AND => TokenAnd::class,
-        Token::OR => TokenOr::class,
-        Token::VAR => TokenVar::class,
-    ];
-
-    protected $tokenNameMap = [
-
-    ];
-
-    public function getTokenByName(string $name): TokenInterface
-    {
-        $originalName = $name;
-        if (isset($this->tokenNameMap[$name])) {
-            $name = $this->tokenNameMap[$name];
-        }
-        if (!isset($this->tokenMap[$name])) {
-            return new TokenUndefined($originalName);
-        } else {
-            return new $this->tokenMap[$name]($originalName);
-        }
-    }
-}

src/Token/TokenInterface.php

@@ -40,12 +40,12 @@ abstract class TokenInterface
      */
     public function getFirstToken(): ?TokenInterface
     {
-        if ($this->hasPrevToken()) return $this->prevToken->getFirstToken();
+        if ($this->hasPrevToken()) return $this->getPrevToken()->getFirstToken();
         else return $this;
     }
     public function getLastToken(): ?TokenInterface
     {
-        if ($this->hasNextToken()) return $this->nextToken->getLastToken();
+        if ($this->hasNextToken()) return $this->getNextToken()->getLastToken();
         else return $this;
     }
     public function hasPrevToken(): bool
@@ -62,4 +62,22 @@ abstract class TokenInterface
     public function getNextToken(): ?TokenInterface{
         return $this->nextToken;
     }
+    public function getPrevTokenLength(): int
+    {
+        if ($this->hasPrevToken()) return $this->getPrevToken()->getPrevTokenLength() + 1;
+        else return 0;
+    }
+    public function getNextTokenLength(): int
+    {
+        if ($this->hasNextToken()) return $this->getNextToken()->getNextTokenLength() + 1;
+        else return 0;
+    }
+    public function getLength(): int
+    {
+        return $this->getPrevTokenLength() + $this->getNextTokenLength() + 1;
+    }
+    public function count(): int
+    {
+        return $this->getLength();
+    }
 }